Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Iron and cadmium Zinc and carbon Lead peroxide and lead Nickel and cadmium Iron and cadmium Zinc and carbon Lead peroxide and lead Nickel and cadmium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The scientist who experimentally proved the existance of positron is Fermi Bohr Bethe Anderson Fermi Bohr Bethe Anderson ANSWER DOWNLOAD EXAMIANS APP
Chemistry Electric fuse is an alloy of Zinc and lead Copper and iron Carbon and tin Tin and lead Zinc and lead Copper and iron Carbon and tin Tin and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of waves in n x 10th Bohr's orbit are n-2 n3 n2 n n-2 n3 n2 n ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Ozone Carbon dioxide Carbon monoxide Water vapour Ozone Carbon dioxide Carbon monoxide Water vapour ANSWER DOWNLOAD EXAMIANS APP
Chemistry Assertion (A) : Synthetic detergents can lather wen in hard water.Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water. Both A and R is true but R is not a correct explanation of A A is true but R is false A is false but R is true Both A and R is true and R is the correct explanation of A Both A and R is true but R is not a correct explanation of A A is true but R is false A is false but R is true Both A and R is true and R is the correct explanation of A ANSWER DOWNLOAD EXAMIANS APP
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